Elevator



N. K. SMITH Dec. 8, 1931.

ELEVATOR Original Filed March 24 1925 2 s-Sheet l to i Patented Dec. 8, 1931 UNITED STATES PATENT OFFICE j NELSON K. SMITH, OF LOS ANGELES, CALI'FOIRIN'IA ASSIGNOR TO BYRON JACKSONCOL,

01" LOS ANGELES, CALIFORNIA, A. CORPORATION OF DELAWARE ELEVATOR Original application filed March 24, 1925,Seria1 No. 17,901. Divided and this application filed May 31,

This invention relates to elevators of the type employed for elevating, lowering and otherwise handling tubing, casing, pipe and a sucker rods utilized in the drilling and casing-off of wells and in the pumping of fluids from said wells.

The invention has for an object to improve elevators of the general type mentioned above.

A very important object of the invention is to prevent relative tilting between the elevator and the member that it supports.

()ther objects and advantages will appear in the subjoined detailed description.

This application is a division of application Serial No. 17,901, filed March 24, 1 925.

The accompanying drawings illustrate the invention: 7

Figure 1 is a front elevation of an elevator constructed in accordance'with the provisions of this invention. 7

Figure 2 is a plan view of Fig. 1.

Figure 3 is a fragmental vertical section on the line indicated by 8-3, Fig. 2.

Figure 4 is a sectional View, similar to Fig. 3 of a modified form of construction.

Figure 5 is a view, similar to Fig. 3, showing another modified form of construction.

Figure 6 is a view, similar toFig. 3, showing another modified form of construction.

igure 7 is a view, similar to Fig. 3, showing a still further modified form of construction.

Referring with particularity to the drawings, I have shown in Figures 1 and 2 at A the main body of an elevator device constructed to embody the invention in one form, and at B a closure or gate or member cooperating with the member A to confine or embrace between it and said member A the tubing, casing, pipe, sucker rod or other device or object to be handled or elevated or lowered. The main body A has lateral projections a for engagement by or connection with suspension means (not shown), to that Serial No. 458,090.

therinternal projections or intrusions, within the body and gate, of dilferent formsor combinations of forms, reducing the bore between the gate and body at the zone'whcre such intrusions are provided.

In Figure 3, the means K'i sshown' as an inwardenlargement 45 within the body A and such means K, it is to be understood, will be provided, as are the means M, N, O, and P, not only within a portion of the ob jectj-freceiving bore in an elevator that is bounded by the body A, but likewise the part of such bore that is bounded by the gate B. Such means may be provided at equidistant points or in zones equally relatively spaced, and afford means for closely engaging the pipe, tubing or other member, upon closing the gate. Such formations may be cast on the body and gate and subsequently machined off sufficiently to permit theelevator to receive and accommodate members of larger dimensions or diameters than would otherwise be possible; Furthermore, inasmuch as such formations do not extend entirely around the confines of the bore, below the preferably continuous inward intrusions L, mud and detritus are free to drain downwardly from within the elevator and itsbore so that such bore may be maintained clear ofsuch mudand detritus. f V

The means K is shown as an inward enla rgement that extends from'the intrusion L downwardly for approximately twothirds of the depth of thebody.

In Figure 4 the means M are shown as an arched inward enlargement 46 within the body A. V i

In Figure 5 the means N. comprises an inwardly projecting stud or. studs 47, which may be staggered in the horizontal zone of the elevator.

' In Figure 6 the means 0 may comprise a plurality of spaced elongated vertically disposed intrusions or projections or bosses 48.

In Figure 7 the means P may comprise both the vertical bosses or projections 48 and the studs 47, the studsbeing arranged alternately with the projections, and preferably in a series.

In operation, it will be understood that the elevator is applied to the pipe, tubing, or other member that is to be handled thereby, by bringing such member into the portion of the bore within the body A, whereupon the gate is closed around it, completing the form of the'bore so as to embrace the member, and a collar, coupling or union of the joints or sections of casing, tubing, lengths or sucker rods, or the like, maymest upon the top surface of the elevator body and gate, whereupon the elevator may be suspended and operated in the usual, or any preferred, manner.

It will be clear that the projections or intrusions K, L, M, N, O, P, will engage the outer face of the casing or other member suspended in the elevator, thereby centering the casing or other member in the elevator and preventing relative tilting between the casing and elevator, while, at the same time, detritus and mud may readily flow between the intrusions K, M, N, O, P downwardly out of the bore of the elevator.

It will be obvious to those skilled in the art to which this invention relates, that various changes and modifications may be made in practicing the invention, in departure from the foregoing description and statement, and the disclosureof the drawings, in adapting the invention to var ing conditions of use and service,'without eparting from the spirit and scope of the invention as defined in the appended claims.

I claim:

1. In a device of the general character disclosed, two members adapted to embrace an object and provide a bore therefor, and in truding projections inwardly of's'aid members at spaced zones thereof, said intrusions extending vertically of said members.

2. In a device of the general character disclosed, two members adapted to embrace an object and provide a bore therefor, and intruding projections inwardly of said members at spaced zones thereof, said intrusions extending vertically of said members, in combination with substantially continuous intrusions upon both of said members.

3. A well casing elevator comprising a body and a gate hingedly united and cooperating to provide a vertical work-receiving bore, the bore having a circular flange at its upper end, the bore being enlarged substantially throughout below said flange, and a plurality of uiding lugs at the lower end of the elevator ore.

4. A well casing elevator comprising a having an upper circular work-supporting flange, the bore being enlarged below the flange, and formed with a plurality of inwardly extending guiding lugs near the lower end, such guiding lugs permitting the free passage of hydraulic mud from the interior of the elevator bore as the elevator is gripped with the casing or other work.

6. A well casing elevator comprising a body and gate hingedly united and cooperating to provide a vertical work receiving bore, the bore having a circular flange at its upper end and being enlarged substantially throughout below the flange, and an intruding projection upon the body member below said flange, said projection being of relative ly small circumferential width compared to said upper flange.

7 A well casing elevator comprising a body and gate hingedly united and cooperating to provide a vertical work receiving bore, the bore having a circular flange at its upper end and being enlarged substantially throughout below the flange, and circumferentially spaced intruding projections upon the'body and door members below said flange.

Signed at Los Angeles, California, this 26th day of May, 1930.

NELSON K. SMITH. 

